21 files changed, 923 insertions, 0 deletions
diff --git a/labb4/GameState.cpp b/labb4/GameState.cpp
new file mode 100644
index 0000000..581d2f7
--- /dev/null
+++ b/labb4/GameState.cpp
@@ -0,0 +1,104 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "GameState.h"
+#include "utilities.h"
+#include "constants.h"
+
+GameState::GameState(){}
+
+GameState::GameState(int numberOfRobots) {
+    for (int i = 0; i < numberOfRobots; i++) {
+        Robot robot;
+        do {robot = Robot();}
+        while (!isEmpty (robot));
+        robots.push_back(robot);
+    }
+    teleportHero();
+}
+
+void GameState::draw(QGraphicsScene *scene) const {
+    scene->clear();
+    for (size_t i = 0; i < robots.size(); ++i)
+        robots[i].draw(scene);
+    for (size_t i = 0; i < junks.size(); ++i)
+        junks[i].draw(scene);
+    hero.draw(scene);
+}
+
+void GameState::teleportHero() {
+    do hero.teleport();
+    while (!isEmpty(hero));
+}
+
+void GameState::moveRobots() {
+    for (unsigned int i = 0; i < robots.size(); i++)
+        robots[i].moveTowards (hero);
+}
+
+int GameState::countCollisions() {
+    int numberDestroyed = 0;
+    unsigned int i = 0;
+    while (i < robots.size()) {
+        bool hitJunk = junkAt (robots[i]);
+        bool collision = (countRobotsAt (robots[i]) > 1);
+        if (hitJunk || collision) {
+            if (!hitJunk) junks.push_back (Junk(robots[i]));
+            robots[i] = robots[robots.size()-1];
+            robots.pop_back();
+            numberDestroyed++;
+        } else i++;
+    }
+    return numberDestroyed;
+}
+
+bool GameState::anyRobotsLeft() const {
+    return (robots.size() != 0);
+}
+
+bool GameState::heroDead() const {
+    return !isEmpty(hero);
+}
+
+bool GameState::isSafe(const Unit& unit) const {
+    for (unsigned int i = 0; i < robots.size(); i++)
+        if (robots[i].attacks(unit)) return false;
+    if (junkAt(unit)) return false;
+    return true;
+}
+
+void GameState::moveHeroTowards(const Unit& dir) {
+    hero.moveTowards(dir);
+}
+
+Hero GameState::getHero() const {return hero;}
+
+/*
+ * Free of robots and junk only
+ */
+bool GameState::isEmpty(const Unit& unit) const {
+    return (countRobotsAt(unit) == 0 && !junkAt(unit));
+}
+
+/*
+ * Is there junk at unit?
+ */
+bool GameState::junkAt(const Unit& unit) const {
+    for (size_t i = 0; i < junks.size(); ++i)
+        if (junks[i].at(unit)) return true;
+    return false;
+}
+
+/*
+ * How many robots are there at unit?
+ */
+int GameState::countRobotsAt(const Unit& unit) const {
+    int count = 0;
+    for (size_t i = 0; i < robots.size(); ++i) {
+        if (robots[i].at(unit))
+            count++;
+    }
+    return count;
+}
diff --git a/labb4/GameState.h b/labb4/GameState.h
new file mode 100644
index 0000000..d260c58
--- /dev/null
+++ b/labb4/GameState.h
@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ *
+ * Maintains the game state:  Location of all robots, junk and hero.
+ * Method isSafe() is used to keep Hero from moving stupidly.
+ */
+
+#ifndef GAMESTATE_H
+#define GAMESTATE_H
+
+#include <string>
+#include <vector>
+#include <QGraphicsScene>
+#include "Unit.h"
+#include "Robot.h"
+#include "Junk.h"
+#include "Hero.h"
+
+class GameState {
+public:
+    GameState();
+    GameState(int numberOfRobots);
+
+    /*
+     * Clear and redraw entire playing field
+     */
+    void draw(QGraphicsScene* scene) const;	// Clear and redraw entire playing field
+
+    /*
+     * Teleport hero to random location
+     */
+    void teleportHero();
+
+    /*
+     * Move robots one step towards hero
+     */
+    void moveRobots();
+
+    /* Count colliding robots
+     * Also converts robots to junk while
+     * checking collisions
+     */
+    int countCollisions ();
+
+    /*
+     * Check if any robots are left on playing field
+     */
+    bool anyRobotsLeft () const;
+
+    /*
+     * Is hero in same place as robot or junk?
+     */
+    bool heroDead() const;
+
+    /*
+     * Can unit safely reside here?
+     */
+    bool isSafe (const Unit& unit) const; // Can unit safely reside here?
+
+    /*
+     * Move hero towards dir
+     */
+    void moveHeroTowards (const Unit& dir);
+
+    /*
+     * Return hero
+     */
+    Hero getHero () const;
+
+private:
+    std::vector<Robot> robots;  // the robots
+    std::vector<Junk> junks;    // robots that have turned to junk
+    Hero hero;                  // the hero
+
+    // private helpers
+    bool isEmpty(const Unit& unit) const;
+    bool junkAt(const Unit& unit) const;
+    int countRobotsAt(const Unit& unit) const;
+
+};
+
+#endif // GAMESTATE_H
diff --git a/labb4/Hero.cpp b/labb4/Hero.cpp
new file mode 100644
index 0000000..2d3b12e
--- /dev/null
+++ b/labb4/Hero.cpp
@@ -0,0 +1,15 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "Hero.h"
+#include "constants.h"
+
+Hero::Hero() : Unit() {}
+
+void Hero::draw(QGraphicsScene *scene) const {
+    Point corner = asPoint();
+    scene->addRect(QRectF(corner.x * UNIT_WIDTH, corner.y * UNIT_HEIGHT,
+                          UNIT_WIDTH, UNIT_HEIGHT), Qt::NoPen, QBrush(HERO_COLOR));
+}
diff --git a/labb4/Hero.h b/labb4/Hero.h
new file mode 100644
index 0000000..7750b19
--- /dev/null
+++ b/labb4/Hero.h
@@ -0,0 +1,22 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef HERO_H
+#define HERO_H
+
+#include "Unit.h"
+#include <QGraphicsScene>
+
+class Hero : public Unit {
+public:
+    Hero();
+
+    /*
+    * Draws this hero onto the given QGraphicsScene.
+    */
+    void draw(QGraphicsScene *scene) const;
+};
+
+#endif // HERO_H
diff --git a/labb4/Junk.cpp b/labb4/Junk.cpp
new file mode 100644
index 0000000..5f6ea29
--- /dev/null
+++ b/labb4/Junk.cpp
@@ -0,0 +1,16 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "Junk.h"
+#include "constants.h"
+
+Junk::Junk() : Unit() {}
+Junk::Junk(Unit c) : Unit(c) {}
+
+void Junk::draw(QGraphicsScene *scene) const {
+    Point corner = asPoint();
+    scene->addEllipse(QRectF(corner.x * UNIT_WIDTH, corner.y * UNIT_HEIGHT,
+                             JUNK_RADIUS, JUNK_RADIUS), QPen(), QBrush(JUNK_COLOR));
+}
diff --git a/labb4/Junk.h b/labb4/Junk.h
new file mode 100644
index 0000000..b3b5648
--- /dev/null
+++ b/labb4/Junk.h
@@ -0,0 +1,23 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef JUNK_H
+#define JUNK_H
+
+#include "Unit.h"
+#include <QGraphicsScene>
+
+class Junk : public Unit {
+public:
+    Junk();
+    Junk(Unit c);
+
+    /*
+    * Draws this junk onto the given QGraphicsScene.
+    */
+    void draw(QGraphicsScene* scene) const;
+};
+
+#endif // JUNK_H
diff --git a/labb4/Robot.cpp b/labb4/Robot.cpp
new file mode 100644
index 0000000..fa4df91
--- /dev/null
+++ b/labb4/Robot.cpp
@@ -0,0 +1,15 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "Robot.h"
+#include "constants.h"
+
+Robot::Robot() : Unit() {}
+
+void Robot::draw(QGraphicsScene *scene) const {
+    Point corner = asPoint();
+    scene->addEllipse(QRectF(corner.x * UNIT_WIDTH, corner.y * UNIT_HEIGHT,
+                             JUNK_RADIUS, JUNK_RADIUS), QPen(), QBrush(ROBOT_COLOR));
+}
diff --git a/labb4/Robot.h b/labb4/Robot.h
new file mode 100644
index 0000000..953b818
--- /dev/null
+++ b/labb4/Robot.h
@@ -0,0 +1,18 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef ROBOT_H
+#define ROBOT_H
+
+#include "Unit.h"
+#include <QGraphicsScene>
+
+class Robot : public Unit {
+public:
+    Robot();
+    void draw(QGraphicsScene* scene) const;
+};
+
+#endif // ROBOT_H
diff --git a/labb4/Robots.pro b/labb4/Robots.pro
new file mode 100644
index 0000000..e6db845
--- /dev/null
+++ b/labb4/Robots.pro
@@ -0,0 +1,26 @@
+TEMPLATE = app
+QT += widgets
+HEADERS += mainwindow.h \
+    utilities.h \
+    constants.h \
+    Unit.h \
+    Junk.h \
+    Hero.h \
+    Robot.h \
+    GameState.h \
+    qgameoverwindow.h \
+    qresetbutton.h
+SOURCES += mainwindow.cpp \
+    robotsmain.cpp \
+    utilities.cpp \
+    Unit.cpp \
+    Junk.cpp \
+    Hero.cpp \
+    Robot.cpp \
+    GameState.cpp \
+    qgameoverwindow.cpp \
+    qresetbutton.cpp
+QMAKE_CXXFLAGS += -std=c++11
+macx {
+    cache()
+}
diff --git a/labb4/Unit.cpp b/labb4/Unit.cpp
new file mode 100644
index 0000000..1492f63
--- /dev/null
+++ b/labb4/Unit.cpp
@@ -0,0 +1,66 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "Unit.h"
+#include "constants.h"
+#include "utilities.h"
+#include <cstdlib>
+#include <cmath>
+
+Unit::Unit() {
+    teleport();
+}
+
+Unit::Unit(const Unit& u) {
+    x = u.x;
+    y = u.y;
+}
+
+Unit::Unit(const Point& p) {
+    x = p.x;
+    y = p.y;
+}
+
+Point Unit::asPoint() const {
+    return Point{x, y};
+}
+
+bool Unit::at(const Unit& u) const {
+    return (x == u.x && y == u.y);
+}
+
+bool Unit::attacks(const Unit& u) const {
+    return (abs(x - u.x) <= 1 &&
+            abs(y - u.y) <= 1);
+}
+
+void Unit::moveTowards(const Unit& u) {
+    if (x > u.x) x--;
+    if (x < u.x) x++;
+    if (y > u.y) y--;
+    if (y < u.y) y++;
+    checkBounds();
+}
+
+void Unit::teleport() {
+    x = rand_int (MIN_X, MAX_X);
+    y = rand_int (MIN_Y, MAX_Y);
+}
+
+double Unit::distanceTo(const Unit& u) const {
+    double dx = u.x - x;
+    double dy = u.y - y;
+    return sqrt(dx * dx + dy * dy);
+}
+
+/*
+ * Put this unit inside playing field if outside
+ */
+void Unit::checkBounds() {
+    if (x < MIN_X) x = MIN_X;
+    if (x > MAX_X) x = MAX_X;
+    if (y < MIN_Y) y = MIN_Y;
+    if (y > MAX_Y) y = MAX_Y;
+}
diff --git a/labb4/Unit.h b/labb4/Unit.h
new file mode 100644
index 0000000..1de5687
--- /dev/null
+++ b/labb4/Unit.h
@@ -0,0 +1,57 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef UNIT_H
+#define UNIT_H
+
+#include "utilities.h"
+
+/* Root class for all pieces on the board.
+ * Subclasses are Robot, Hero and Junk.
+ */
+class Unit {
+public:
+    Unit();
+    Unit(const Unit& u);
+    Unit(const Point& p);
+
+    /*
+    * Return Point representation of Unit
+    */
+    Point asPoint() const;
+
+    /*
+    * Am I in the same square as u?
+    */
+    bool at(const Unit& u) const;
+
+    /*
+    * Can I catch u in one move?
+    */
+    bool attacks(const Unit& u) const;
+
+    /*
+    * Take one step closer to u
+    */
+    void moveTowards(const Unit& u);
+
+    /*
+    * Teleport. Does not check for collision
+    */
+    void teleport();
+
+    /*
+    * Euclidean distance to u
+    */
+    double distanceTo(const Unit& u) const;
+private:
+    int x;  // x position of this unit
+    int y;  // y position of this unit
+
+    // private helpers
+    void checkBounds();
+};
+
+#endif // UNIT_H
diff --git a/labb4/constants.h b/labb4/constants.h
new file mode 100644
index 0000000..b6e4f8c
--- /dev/null
+++ b/labb4/constants.h
@@ -0,0 +1,32 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef CONSTANTS_H
+#define CONSTANTS_H
+
+#include <QColor>
+
+// GUI constants
+const int MIN_X = 0;
+const int MIN_Y = 0;
+const int MAX_X = 39;
+const int MAX_Y = 39;
+const int UNIT_WIDTH = 10;
+const int UNIT_HEIGHT = 10;
+static const int SCENE_WIDTH = 400;
+static const int SCENE_HEIGHT = 400;
+const int JUNK_RADIUS = 9;
+const QColor JUNK_COLOR = QColor(0, 0, 0);
+const QColor ROBOT_COLOR = QColor(245, 95, 60);
+const QColor HERO_COLOR = QColor(237, 207, 114);
+
+// game constants
+const int MIN_ROBOTS = 10;
+const int MAX_ROBOTS = 80;
+const int ROBOTS_INC = 5;	// Additional robots per round
+const int POINTS_PER_ROBOT = 10;
+const int WAIT_BONUS = 20;	// Per robot
+
+#endif // CONSTANTS_H
diff --git a/labb4/mainwindow.cpp b/labb4/mainwindow.cpp
new file mode 100644
index 0000000..99d288f
--- /dev/null
+++ b/labb4/mainwindow.cpp
@@ -0,0 +1,199 @@
+/**
+ * TDDD86 Robots
+ * This file contains the implementation of the mainwindow class.
+ * See mainwindow.h for comments about each member.
+ */
+
+#include <algorithm>
+#include "mainwindow.h"
+#include "Hero.h"
+#include "Robot.h"
+#include "Junk.h"
+
+MainWindow::MainWindow(QWidget *parent) :
+    QWidget(parent) {
+    // set default size and color
+    scene = new QGraphicsScene(0, 0, SCENE_WIDTH, SCENE_HEIGHT);
+    scene->setBackgroundBrush(QBrush(QColor(204, 192, 179)));
+    view = new QGraphicsView(scene);
+
+    // create the main layout
+    mainLayout = new QVBoxLayout();
+    setLayout(mainLayout);
+
+    // add game board to layout
+    mainLayout->insertWidget(0, view);
+
+    // start new game and draw state
+    gameState.draw(scene);
+
+    // create label layout
+    labelLayout = new QHBoxLayout();
+
+    // create the score widget
+    scoreLabel = new QLabel(QString("SCORE: %1").arg(score));
+    scoreLabel->setStyleSheet("QLabel { color: rgb(235,224,214); font: 16pt; }");
+    scoreLabel->setFixedHeight(35);
+
+    // create the level widget
+    levelLabel = new QLabel(QString("LEVEL: %1").arg(level));
+    levelLabel->setStyleSheet("QLabel { color: rgb(235,224,214); font: 16pt; }");
+    levelLabel->setFixedHeight(35);
+
+    // add score and level widgets to board
+    labelLayout->insertWidget(0, levelLabel, 0, Qt::AlignLeft);
+    labelLayout->insertWidget(1, scoreLabel, 0, Qt::AlignRight);
+    mainLayout->insertLayout(1, labelLayout);
+
+    // style sheet of the game board
+    setStyleSheet("MainWindow { background-color: rgb(187,173,160) }");
+
+    // no resizing of game window
+    setFixedSize(sizeHint());
+
+    connect(gameOverWindow.getResetBtn(), SIGNAL(clicked()), this, SLOT(resetGame()));
+}
+
+MainWindow::~MainWindow() {
+    delete scoreLabel;
+    delete levelLabel;
+    delete labelLayout;
+    delete scene;
+    delete view;
+    delete mainLayout;
+}
+
+/*
+ * Listens to key press events from the graphical subsystem,
+ * and handles the events appropriately:
+ *   - '[n]' moves hero in direction [n],
+ *           where n = 1, 2, 3, 4, 6, 7, 8, 9 on the numeric keypad
+ *   - '5' on the numeric keypad makes the hero wait one turn
+ *   - 'T' teleports hero
+ */
+void MainWindow::keyPressEvent(QKeyEvent *e)
+{
+    if (!gameOver) { // only process key presses while game is not over
+        Hero hero = gameState.getHero();
+        Point pt = hero.asPoint();
+        bool actionTaken = false;
+        bool waiting = false;
+
+        if (e->modifiers() == Qt::KeypadModifier) {
+            switch (e->key()) {
+            case Qt::Key_1:
+                actionTaken = tryMove(hero, Point{pt.x - 1, pt.y + 1});
+                break;
+            case Qt::Key_2:
+                actionTaken = tryMove(hero, Point{pt.x, pt.y + 1});
+                break;
+            case Qt::Key_3:
+                actionTaken = tryMove(hero, Point{pt.x + 1, pt.y + 1});
+                break;
+            case Qt::Key_4:
+                actionTaken = tryMove(hero, Point{pt.x - 1, pt.y});
+                break;
+            case Qt::Key_6:
+                actionTaken = tryMove(hero, Point{pt.x + 1, pt.y});
+                break;
+            case Qt::Key_7:
+                actionTaken = tryMove(hero, Point{pt.x - 1, pt.y - 1});
+                break;
+            case Qt::Key_8:
+                actionTaken = tryMove(hero, Point{pt.x, pt.y - 1});
+                break;
+            case Qt::Key_9:
+                actionTaken = tryMove(hero, Point{pt.x + 1, pt.y - 1});
+                break;
+            case Qt::Key_5:
+                actionTaken = true;
+                waiting = true;
+                break;
+            default:
+                QWidget::keyPressEvent(e);
+            }
+        } else {
+            switch (e->key()) {
+            case Qt::Key_T:
+                gameState.teleportHero();
+                actionTaken = true;
+                break;
+            default:
+                QWidget::keyPressEvent(e);
+            }
+        }
+
+        if (actionTaken) { // process results of viable move
+            processMove(waiting);
+        }
+    } else {  // game is over - do not process key press
+        QWidget::keyPressEvent(e);
+    }
+}
+
+/*
+ * Try to move hero to unit
+ */
+bool MainWindow::tryMove(Hero hero, const Point& point) {
+    if (!outsideBorder(point)) {
+        hero.moveTowards(point);
+        if (gameState.isSafe(hero)) {
+            gameState.moveHeroTowards(point);
+            return true;
+        }
+    }
+    return false;
+}
+
+/*
+ * Process results of viable move
+ */
+void MainWindow::processMove(bool waiting) {
+    gameState.moveRobots();
+    score += gameState.countCollisions() * (POINTS_PER_ROBOT +
+                                            (waiting ? WAIT_BONUS : 0));
+    gameState.draw(scene);
+    displayScore();
+
+    if (!gameState.anyRobotsLeft()) { // won level
+        numberOfRobots = std::min(MAX_ROBOTS, numberOfRobots + ROBOTS_INC);
+        gameState = GameState(numberOfRobots);
+        gameState.draw(scene);
+        ++level;
+        displayLevel();
+    } else if (gameState.heroDead()) { // game over
+        gameOver = true;
+        gameOverWindow.show();
+    }
+}
+
+/*
+ * Is point outside of playing field?
+ */
+bool MainWindow::outsideBorder(Point const& point) const {
+    return point.x > MAX_X
+            || point.y > MAX_Y
+            || point.x < MIN_X
+            || point.y < MIN_Y;
+}
+
+
+void MainWindow::displayScore() const {
+    scoreLabel->setText(QString("SCORE: %1").arg(score));
+}
+
+void MainWindow::displayLevel() const {
+    levelLabel->setText(QString("LEVEL: %1").arg(level));
+}
+
+void MainWindow::resetGame() {
+    score = 0;
+    level = 1;
+    numberOfRobots = MIN_ROBOTS;
+    gameState = GameState(numberOfRobots);
+    gameState.draw(scene);
+    displayScore();
+    displayLevel();
+    gameOver = false;
+    gameOverWindow.hide();
+}
diff --git a/labb4/mainwindow.h b/labb4/mainwindow.h
new file mode 100644
index 0000000..1ebbb7d
--- /dev/null
+++ b/labb4/mainwindow.h
@@ -0,0 +1,58 @@
+/**
+ * TDDD86 Robots
+ * This file contains the declaration of the mainwindow class.
+ * See mainwindow.cpp for implementation of each member.
+ */
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QWidget>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QGraphicsView>
+#include <QGraphicsScene>
+#include <QLabel>
+#include <QKeyEvent>
+#include "qgameoverwindow.h"
+#include "constants.h"
+#include "GameState.h"
+
+class MainWindow : public QWidget {
+    Q_OBJECT
+public:
+    explicit MainWindow(QWidget *parent = 0);
+    ~MainWindow();
+
+signals:
+
+protected:
+    void keyPressEvent(QKeyEvent *k);
+
+public slots:
+    void resetGame();
+
+private:
+    QVBoxLayout* mainLayout = nullptr;         // main layout
+    QHBoxLayout* labelLayout = nullptr;        // label layout
+    QGraphicsView* view = nullptr;             // playing field widget
+    QGraphicsScene* scene = nullptr;           // scene for playing field
+    QLabel* scoreLabel = nullptr;              // score widget
+    QLabel* levelLabel = nullptr;              // level widget
+    QGameOverWindow gameOverWindow;  // game over widget
+
+    int score = 0;                                   // current score
+    int level = 1;                                   // current level
+    int numberOfRobots = MIN_ROBOTS;                 // current no. of robots
+    GameState gameState = GameState(numberOfRobots); // current state of game
+    bool gameOver = false;
+
+    // private helpers
+    bool tryMove(Hero hero, const Point &point);
+    void processMove(bool waiting);
+    bool outsideBorder(const Point &point) const;
+    void displayScore() const;
+    void displayLevel() const;
+};
+
+#endif // MAINWINDOW_H
diff --git a/labb4/qgameoverwindow.cpp b/labb4/qgameoverwindow.cpp
new file mode 100644
index 0000000..5a3b359
--- /dev/null
+++ b/labb4/qgameoverwindow.cpp
@@ -0,0 +1,42 @@
+/**
+ * TDDD86 Robots
+ * This file contains the implementation of the QGameOverWindow class.
+ */
+
+#include "qgameoverwindow.h"
+#include "qresetbutton.h"
+
+#include <QVBoxLayout>
+#include <QLabel>
+
+QGameOverWindow::QGameOverWindow(QWidget *parent) :
+    QWidget(parent) {
+    setStyleSheet("QGameOverWindow { background: rgb(237,224,200); }");
+    setFixedSize(425, 205);
+    QVBoxLayout *layout = new QVBoxLayout(this);
+
+    // game over label
+    QLabel* gameover = new QLabel("Game Over!", this);
+    gameover->setStyleSheet("QLabel { color: rgb(119,110,101); font: 40pt; font: bold;} ");
+
+    // reset button
+    reset = new QResetButton(this);
+    reset->setFixedHeight(50);
+    reset->setFixedWidth(100);
+
+    // add game over label to window
+    layout->insertWidget(0, gameover, 0, Qt::AlignCenter);
+
+    // add reset button to window
+    layout->insertWidget(1, reset, 0, Qt::AlignCenter);
+}
+
+QGameOverWindow::~QGameOverWindow() {
+    delete reset;
+    delete gameover;
+    delete layout;
+}
+
+QResetButton* QGameOverWindow::getResetBtn() const {
+    return reset;
+}
diff --git a/labb4/qgameoverwindow.h b/labb4/qgameoverwindow.h
new file mode 100644
index 0000000..2185d34
--- /dev/null
+++ b/labb4/qgameoverwindow.h
@@ -0,0 +1,35 @@
+/**
+ * TDDD86 Robots
+ * This file contains the declaration of the QGameOverWindow class.
+ * See qgameoverwindow.cpp for implementation of each member.
+ */
+
+#ifndef QGAMEOVERWINDOW_H
+#define QGAMEOVERWINDOW_H
+
+#include <QWidget>
+#include <QVBoxLayout>
+#include <QLabel>
+#include "qresetbutton.h"
+
+class QGameOverWindow : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit QGameOverWindow(QWidget *parent = 0);
+    ~QGameOverWindow();
+
+    QResetButton* getResetBtn() const;
+
+signals:
+
+public slots:
+
+private:
+
+    QVBoxLayout *layout = nullptr;
+    QLabel* gameover = nullptr;
+    QResetButton* reset = nullptr;
+};
+
+#endif // QGAMEOVERWINDOW_H
diff --git a/labb4/qresetbutton.cpp b/labb4/qresetbutton.cpp
new file mode 100644
index 0000000..8eef506
--- /dev/null
+++ b/labb4/qresetbutton.cpp
@@ -0,0 +1,18 @@
+/**
+ * TDDD86 Robots
+ * This file contains the implementation of the QResetButton class.
+ */
+
+#include "qresetbutton.h"
+
+QResetButton::QResetButton( QWidget* parent) : QLabel(parent) {
+    setText("Try again!");
+    setAlignment(Qt::AlignCenter);
+    setStyleSheet("QResetButton { background-color: rgb(143,122,102); border-radius: 10px; font: bold; color: white; }");
+}
+
+void QResetButton::mousePressEvent(QMouseEvent* event) {
+    if (event) {
+        emit clicked();
+    }
+}
diff --git a/labb4/qresetbutton.h b/labb4/qresetbutton.h
new file mode 100644
index 0000000..4b15e6f
--- /dev/null
+++ b/labb4/qresetbutton.h
@@ -0,0 +1,28 @@
+/**
+ * TDDD86 Robots
+ * This file contains the declaration of the QResetButton class.
+ * See qresetbutton.cpp for implementation of each member.
+ */
+
+#ifndef QRESETBUTTON_H
+#define QRESETBUTTON_H
+
+#include <QLabel>
+
+class QResetButton : public QLabel
+{
+    Q_OBJECT
+public:
+    QResetButton( QWidget* parent = 0);
+
+signals:
+    void clicked();
+
+public slots:
+
+protected:
+    void mousePressEvent(QMouseEvent* event);
+
+};
+
+#endif // QRESETBUTTON_H
diff --git a/labb4/robotsmain.cpp b/labb4/robotsmain.cpp
new file mode 100644
index 0000000..64eb176
--- /dev/null
+++ b/labb4/robotsmain.cpp
@@ -0,0 +1,21 @@
+/**
+ * TDDD86 Robots
+ * This client program contains the 'main' function to set up the overall
+ * program's graphical user interface.
+ * Your code should work properly with an unmodified version of this file.
+ */
+
+#include <QApplication>
+#include "mainwindow.h"
+#include "utilities.h"
+
+int main(int argc, char *argv[]) {
+    QApplication a(argc, argv);
+
+    rand_seed();     // seed random number generator
+
+    MainWindow view; // create main window
+    view.show();     // display main window
+
+    return a.exec(); // start Qt event loop
+}
diff --git a/labb4/utilities.cpp b/labb4/utilities.cpp
new file mode 100644
index 0000000..a894a3c
--- /dev/null
+++ b/labb4/utilities.cpp
@@ -0,0 +1,18 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "utilities.h"
+#include "constants.h"
+#include <cstdlib>
+#include <ctime>
+
+void rand_seed() {
+    int seed = static_cast<int>(time(0));
+    srand(seed);
+}
+
+int rand_int(int a, int b) {
+    return a + rand() % (b - a + 1);
+}
diff --git a/labb4/utilities.h b/labb4/utilities.h
new file mode 100644
index 0000000..c180129
--- /dev/null
+++ b/labb4/utilities.h
@@ -0,0 +1,27 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#ifndef UTILITIES_H
+#define UTILITIES_H
+
+struct Point {
+    int x;
+    int y;
+};
+
+/**
+ * Sets the seed of the random number generator.
+ */
+void rand_seed();
+
+/**
+ *  Returns a random integer in a range.
+ *  @param a the bottom of the range
+ *  @param b the top of the range
+ *  &return a random number x having a <= x and x <= b
+ */
+int rand_int(int a, int b);
+
+#endif // UTILITIES_H